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CVE-2026-53087— net: bcmgenet: fix leaking free_bds

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.15版本存在安全漏洞，该漏洞源于回收tx队列时未将丢弃的帧添加回free_bds池，可能导致数据丢失。

CVSS 7.5 · High EPSS 0.68% · P52

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 11

VendorProduct Version RangeStatus
Linux Linux 6a84791b63044cdee3ab55eb350e6352b751f584< 150d06aae1839a6564ab200ef0e7291c3528bbb0 affected
991cd78f95f2a1d6097669afaff66aeeba35f5fd< 52b9f80993698138b90e5ca3a72550a2501f2a96 affected
3877efc13053408f4cf2e821006d6ddd1929200f< 3c3abbcfa05bad17965498ff7cc94c2418fa94b3 affected
f1bacae8b655163dcbc3c54b9e714ef1a8986d7b< 25ff3a3e47ea635ec08dc93e84dd2bfe15abfebb affected
f1bacae8b655163dcbc3c54b9e714ef1a8986d7b< ac4a29c331ecb5b10240c44247a8e010c95bc15b affected
f1bacae8b655163dcbc3c54b9e714ef1a8986d7b< 3f3168300efb839028328d720ab3962f91d6a0d0 affected
6.15 affected
< 6.15 unaffected
… +3 more rows
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I. Basic Information for CVE-2026-53087

Vulnerability Information
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Vulnerability Title
net: bcmgenet: fix leaking free_bds
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix leaking free_bds While reclaiming the tx queue we fast forward the write pointer to drop any data in flight. These dropped frames are not added back to the pool of free bds. We also need to tell the netdev that we are dropping said data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.15版本存在安全漏洞，该漏洞源于回收tx队列时未将丢弃的帧添加回free_bds池，可能导致数据丢失。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6a84791b63044cdee3ab55eb350e6352b751f584 ~ 150d06aae1839a6564ab200ef0e7291c3528bbb0 -
Linux Linux 6.15 -

II. Public POCs for CVE-2026-53087

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III. Intelligence Information for CVE-2026-53087

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Patches & Fixes for CVE-2026-53087 (6)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53087

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